What works in dry windy Wyoming, is a 10k resistor across the antenna connector, inside the radio.
The resistor bleeds off the static before it builds up high enough to blow up the mixer. AND it is high enough resistance
to not affect TX operation.?
Have a great day,
Dale - WC7S in Wy
"Actions speak louder than words"
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Katsuhiko -- good morning from the UK
I have 2 QRP+ transceivers. One works well the other was purchased to provide spare parts -- which inevitably become 'Unobtanium' over time!
I've repaired a couple of QRP+'s for friends here in the UK. In each case it was the SBL-1 Mixer that had failed.
I did quite a bit of research into why these mixers appear to fail 'spontaneously' and I concluded that it was static electric charge on the antennas so beware when using your 'new' QRP+
Long wires appear to be the worst for this type of failure -- the longer the wire, the more static charge can build up.
I suggest as a precaution you disconnect -- or better still, 'earth' your QRP+ antenna connection when you are not using the rig.
I have a 6-way antenna switch between my QRP rigs and my antennas at home and it enables me to 'earth' any or all the rigs if needed.
There is a small modification you can do to the QRP+ to reduce the likelihood of this failure mode. There is information on the Web about this.
Enjoy your QRP+?
I use mine every week on CW and make many contacts from the UK.
73
Bruce G4ABX
